Glomus tympanicum chemodectomas: radiographic and clinical characteristics

Glomus tympanicum chemodectomas are benign neoplasms that develop from normal glomus bodies located along the Jacobson (tympanic) nerve in the middle ear. The medical charts and radiographic studies of 55 patients with these tumors were reviewed. Women outnumbered men in a ratio of 3.5:1, and the patients' average age when they initially reported symptoms was 52 years. Tinnitus, ear pulsations, and diminished hearing were the most frequent symptoms. No patient had a second chemodectoma, and none of seven patients who were tested had elevated neuroendocrine compounds. Review of the radiographic examinations showed that direct coronal, thin-section computed tomography (CT) was the most sensitive means of demonstrating glomus tympanicum chemodectomas. Magnification angiography was also a sensitive diagnostic study, typically depicting a trapezoidal, hypervascular, middle-ear mass that appeared initially in the middle-to-late arterial phase and quickly disappeared in the venous phase. Differentiation from an aberrant internal carotid artery is critical to prevent arterial biopsy.     

Zur Röntgenidentifizierung unbekannter Leichen bei fortgeschrittenen postmortalen Veränderungen

Zusammenfassung Die postmortalen Veränderungen an einer Wasserleiche und an einer Brandleiche waren so weit fortgeschritten, daß die üblichen Identifizierungsmethoden versagen mußten. Vergleichende röntgenologische Untersuchungen ermöglichten jedoch den sicheren Nachweis der Identität. Der Erfolg beruhte auf der individuellen Variabilität des Skelettsystems und seiner hohen Widerstandsfähigkeit gegenüber intravitalen und postmortalen Einflüssen. Neben der hohen Aussagekraft sind einfache, schnelle Handhabung sowie Dokumentation — ohne Beeinträchtigung der Obduktion — weitere Vorteile der Röntgenidentifizierung. Die vorgestellten Fälle zeigen zudem, daß auch zehn Jahre alte intravitale Vergleichsbilder zur Identifizierung beitragen können.Auszugsweise vorgetragen auf der 18. Tagung der Oberrheinischen Rechtsmediziner am 29.5. 1987 in Mainz     

Über die Alternativen zur Lebendspende im Transplantationsgesetz: Die Überkreuz-Lebendspende – warum nicht auch in Deutschland?

Ohne Zusammenfassung     

The contribution of risk factors to the effect of early otitis media with effusion on later language, reading, and spelling

A cohort of 946 children who were screened for otitis media with effusion (OME) from the ages of 2 to 4 were studied for language, reading, and spelling at 7 years of age. The effects of OME in combination with single risk factors and with increasing numbers of risk factors were investigated. An interaction with an additional risk factor was found only for gender and OME, with boys' spelling influenced negatively by a history of OME. OME in combination with preterm birth and low birthweight also appears to put children at risk for later langauage and educational problems. Although a negative linear relation between the number of risk factors and later functioning was found, it is suggested that OME, even when combined with a number of other risk factors, produces only minor effects on later language, reading, and spelling.     

Central pontine myelinolysis and its imitators: MR findings

The clinical, radiologic, and neuropathologic findings in 13 patients with central pontine myelinolysis were reviewed. Antemortem computed tomography (CT) had been performed in nine, and ante- or postmortem magnetic resonance (MR) imaging in 11. Chronic alcoholism or rapid correction of hyponatremia was present in over 75% of cases. One CT scan was positive, but only on retrospective review. In all but one patient, MR imaging eventually revealed an abnormality within the pons; in two patients the initial study was normal. The lesions varied in shape, with peripheral involvement in two patients and extrapontine involvement in four. The abnormality was smaller at 6-month follow-up in one patient and unchanged at 1 year in another. One patient never had a demonstrable pontine lesion but did have symmetric basal ganglia abnormalities, which were consistent with extrapontine myelinolysis. MR imaging disclosed similar central pontine alterations resulting from infarct, metastasis, glioma, multiple sclerosis, encephalitis, and radiation or chemotherapy; thus, such changes are not unique.     

人工牛黄的光解

人工牛黄是广泛用于中成药配方的中药代用品。本文用漫反射光谱法研究了人工牛黄样品在人工光源照射下发生颜色变化的光解规律:在三种光源下,其光解均属二步表观一级反应动力学,即光解曲线是由两段斜率不同的直线组成,初期的光解速度较其后的快2倍左右;不同光源下,紫外灯光解速度最快,荧光高压汞灯次之,碘钨灯最慢;表观光解常数与光波长有关,但基本不随光强度和照射时间乘积改变。而光解时间则与光强度成反比。从得到的动力学方程可预测不同条件下的褪色时间。研究表明,人工牛黄复方中,发生光解的主要成分是胆红素,其余成分不发生引起颜色变化的光解,但在第二步反应中对胆红素的光解有明显影响。     

HL-A TYPING IN DRIED BLOOD STAINS 1. SPECIFICITY AND RELIABILITY OF THE INHIBITION TEST

It is described that HL-A inhibiting substances can be detected in dried human blood stains. An inhibition test is used to evaluate stability and specificity of soluble HL-A antigens in one- and two-stage methods. With few exceptions, the occurrence of inhibition and non-inhibition of stains from different subjects in respect to given HL-A antisera is in agreement with specificities present on the donor's cells. Some‘weak inhibitors’were observed. Extra-reactions with given antisera can be explained by cross-inhibition. One- and two-stage methods are evaluated with regard to the inhibition test for human blood stain HL-A typing.